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    Ask Math Anything Topics from May 2020

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    • debbieD
      debbie ADMIN M0★ M1 M5
      last edited by

      Mon 5/4/20 Live stream topics

      • Fourier transforms and NOVID
      • Order of operations
      • Floating point decimals
      • Writing \( \frac{1}{3} \) in base 2
      • Writing \(2310321\) in base 4. What does it equal in base 2?
      • Do you get discouraged when you make a mistake in math problems?
      • I do like math, but I don't like it a lot. What should I do?
      • How can I train myself in mental math?
      • The trick for squaring numbers ending in 5
      • Why is the square root of a number usually irrational?
      • \(31^2\) is the flip of \(13^2\). Why? Why doesn't this trick work for 14 and 41?
      • Why did it take so long to get NOVID into the Play Store?
      • What would happen if every one jumped at the same time at the place where they are right now?
      1 Reply Last reply Reply Quote 1
      • debbieD
        debbie ADMIN M0★ M1 M5
        last edited by debbie

        Tue 5/5/20 Live stream topics

        • What is the probability that you will wear a green shirt?
        • Have you ever used algebra outside of teaching? It seems inapplicable elsewhere...
        • How to remember formulas easily
        • Slope-intercept form (epols is slope backwards)
        • Why is this show called, "Ask Math Anything"?
        • Five people were eating apples. A finished before B, but behind C.D finished before E, but behind B. What was the finishing order?
        • What is the first factorial that has mod 314 \( \equiv 0 ? \)
        • Susan and Lisa decided to play tennis against each other. They bet $1 on each game they played. Susan won three bets and Lisa won $5. How many games did they play?
        • What is the probability of randomly placing all the people in the world on Rhode Island and having a family member next to you?
        • Talk about light years
        • Is anything faster than light, if you're in a wormhole?
        • What do you do during math competition breaks?
        1 Reply Last reply Reply Quote 1
        • debbieD
          debbie ADMIN M0★ M1 M5
          last edited by

          Wed 5/6/20 Live stream

          2020 MATHCOUNTS Chapter Round Questions #1-20

          1 Reply Last reply Reply Quote 1
          • debbieD
            debbie ADMIN M0★ M1 M5
            last edited by

            Thu 5/7/20 Live stream

            2020 MATHCOUNTS Chapter Questions #21-30

            1 Reply Last reply Reply Quote 1
            • debbieD
              debbie ADMIN M0★ M1 M5
              last edited by debbie

              Fri 5/8/20 Live stream

              2020 MATHCOUNTS Chapter Target Round #1-8

              • How do you get over the crippling anxiety of the countdown round?
              • How long should you read the problem for, and how long should you do the problem for?
              • Can you go over the old MATHCOUNTS problems from previous years?
              • How many questions does a normal person get right on the Sprint Round? I want to compare myself against other competitors and study more if needed
              1 Reply Last reply Reply Quote 1
              • debbieD
                debbie ADMIN M0★ M1 M5
                last edited by

                Sat 5/9/20 Live stream topics

                • Is there a cameraman?
                • How do you get good at quick math?
                • What is your computer model?
                • What are you afraid of?
                • Where is your water cup?
                • Was math invented or discovered?
                • Is it okay to feel lonely even though I have my family?
                • What microphone model do you have?
                • Is math a language?
                • When was the last time you had a haircut?
                • Do you think that in the future the dollar bill will be worth more or less than now?
                • When did you start the Daily Challenge?
                • What is the progress on the iPhone app?
                • What is the definition of a nerd in your mind?
                • What glasses do you have?
                • What were you like in high school?
                1 Reply Last reply Reply Quote 1
                • debbieD
                  debbie ADMIN M0★ M1 M5
                  last edited by debbie

                  Mon 5/11/20 Live stream topics

                  • What are the perimeter and volume of your house?
                  • What is the smallest possible surface area?
                  • The origin of the name "pi"
                  • What's the status of NOVID?
                  • Tips on the ACT and SAT
                  • Why is the area of a circle \( \pi r^2?\) Why don't you cut the pie into 11 slices?
                  • Let \(a\) and \(b\) be irrational numbers. Are there such numbers \(a\) and \(b\) such that \(a^b\) is a rational number?
                  • Euler's Identity
                  • \(\sqrt{2}^2 = 3\) ?
                  • What would happen if all life on Earth stopped for 5 minutes?
                  • Why does the gap between prime numbers INCREASE?
                  • Billy and a cat are playing a memory game composed of 72 cards, each with an identical pair. What is the probability of Billy and the cat flipping half of the cards, and not finding one pair?
                  1 Reply Last reply Reply Quote 1
                  • debbieD
                    debbie ADMIN M0★ M1 M5
                    last edited by debbie

                    Tue 5/12/20 Live stream topics

                    • Let \(a\) and \(b\) be any positive integer such that \(ab + 1 \) divides \( a^2 + b^2\). Show that \( \frac{a^2 + b^2}{ab + 1}\) is the square of an integer. Are \(a\) and \(b\) even?
                    • What are some good ways to speed through mental math?
                    • If \(a - b = 1\) and \(b-c = 1\) and \(c-a = 3,\) and \(abc = 60,\) what are \(a, b,\) and \(c?\)
                    • 99 in base 10 + 77 in base 10 equals what in base 9?
                    • FOIL explanation with area
                    • Is math related to Minecraft?
                    • Once I assign mass points, what do I do after?
                    • Let \(S\) be the set of all positive integers between 1 and 2017, inclusive. Suppose that the least common multiple of all elements in \(S\) is \(L.\) Find the number of elements in \(S\) that do not divide \( \frac{L}{2016}\)
                    1 Reply Last reply Reply Quote 1
                    • debbieD
                      debbie ADMIN M0★ M1 M5
                      last edited by debbie

                      Wed 5/13/20 Live stream topics

                      • How many digits are there in \(100!\)?
                      • What is \( 2!!!^{2!!^{2!}}\) ???
                      • \(2^{2^{2^{2^{2^2}}}}\)
                      • How do you stay motivated to work on math when times are difficult and your interest is fading?
                      • Is it possible to make a checkerboard with one penny on the first square, two pennies on the second square, three on the third, and so on and so forth?
                      • What is the smallest whole number that is equal to seven times the sum of its digits?
                      • What's the best strategy to get far in the AMC's?
                      • What's the number of edges in a 10-dimensional cube?
                      • Why are there commas between every three digits in a number?
                      • How many squares are there on an 8x8 chessboard?
                      • Tips for learning calculus
                      1 Reply Last reply Reply Quote 1
                      • debbieD
                        debbie ADMIN M0★ M1 M5
                        last edited by

                        Thu 5/14/20 Live stream topics

                        • Tips for doing the countdown round at MATHCOUNTS
                        • If there are two types of people, people who lie and people who don't lie, and you meet a stranger, how can you tell if they are a liar or not?
                        • How to find the square root of a number manually
                        1 Reply Last reply Reply Quote 1
                        • debbieD
                          debbie ADMIN M0★ M1 M5
                          last edited by debbie

                          Fri 5/15/20 Live stream topics

                          Lexington Math Tournament Review
                          #1, #2, #7, #12, #28

                          1 Reply Last reply Reply Quote 1
                          • debbieD
                            debbie ADMIN M0★ M1 M5
                            last edited by

                            Sat 5/16/20 Live stream topics

                            • How do you cope with coronavirus? Do you go to the store on a daily basis?
                            • The danger of coronavirus is that people spread it before they know that they are sick
                            • Have you ever met Sal Khan, Richard Rusczyk or Terence Tao?
                            • What kind of phone do you have?
                            • Can human beings approach the speed of light?
                            • Is NOVID going to be able to be sold?
                            • Can you turn the blue background off and show us the green screen?
                            • Have you ever met Grant Sanderson?
                            • If you have never seen a type of problem, how do you approach it first?
                            • What is the best way to learn? Like, how long should you learn, practice, research and rest? Thanks!
                            • Why do you love math so much?
                            • What do you do in isolation?
                            1 Reply Last reply Reply Quote 1
                            • debbieD
                              debbie ADMIN M0★ M1 M5
                              last edited by

                              Mon 5/18/20 Live stream topics

                              • Can music help with math? If so, then how?
                              • Using math to win in monopoly
                              • If you're flipping an empty bottle (like a Pure Life bottle), what angle do you need to throw it at in order to make it land on its cap?
                              • Is it possible to have 3 real, distinct, non-zero numbers \(a, b,\) and \(c\) such that \(a, b\) and \(c\) form both an arithmetic and geometric sequence?
                              • Geometric mean
                              • What can be done to make education free for everyone globally? And make the world a better place?
                              • We say \(\pi\) is an irrational number. That means it can't be expressed as \(\frac{p}{q}.\) But then why is \(\pi\) the ratio between the circumference and the diameter of a circle?
                              • How to prove \( \sqrt{ab} \leq \frac{a+b}{2}?\)
                              • If I give you a normal paper and tell you to fold it 30 times, can it be higher that the Himalayas?
                              • How good are you at physics?
                              • Can you prove that \(e^{\pi}\) is greater than \(\pi^e\) without using a calculator?
                              • Why do you use Linux? Assuming it's good, how?
                              • How accurate is sample size?
                              • Are you the US National Olympiad coach?
                              1 Reply Last reply Reply Quote 1
                              • debbieD
                                debbie ADMIN M0★ M1 M5
                                last edited by

                                Tue 5/19/20 Live stream topics

                                • Conic sections
                                • What is the probability that a person scores zero marks in a multiple-choice question test with 50 questions, each of which has 3 choices and gets three correct?
                                • Is engineering more math or more physics?
                                • Is luck real?
                                • A special coin to explain math
                                • What's your tips for improving math skills for a disciplined, non-math student?
                                • Can you use math to win rock paper scissors?
                                • What is as light as a feather but something the strongest animal or human can't hold?
                                • How many vertices does a cube have? Euler's Polyhedral Formula
                                • Is 4-D chess possible?
                                • Why is the AMC logo an icosahedron?
                                • Where did you learn to draw an icosahedron?
                                • What's the best way to memorize something?
                                • If you didn't do math, what would you major in?
                                • What's the point of radicals?
                                • Do you like art?
                                1 Reply Last reply Reply Quote 1
                                • debbieD
                                  debbie ADMIN M0★ M1 M5
                                  last edited by

                                  Wed 5/20/20 Live stream topics

                                  • The millennium prize problems
                                  • Could you please help us understand the values of negative \(n\)?
                                  • What was that ringing in the background?
                                  • Given \(n\) married couples, how many ways are there to form pairs consisting of one man and one woman who are not a couple?
                                  • Any tips for solving combinatorics problems generally?
                                  • Can you recite \(\pi\) to 100 digits?
                                  • What is your guidance for students who want to pursue research in math in the future?
                                  • If I don't like math, should I continue doing it?
                                  • I like non-routine math, but it takes time, and school doesn't allow that!
                                  • Why is math related to coding?
                                  • Do you think that one day, calculus will be taught in elementary school?
                                  • Could you explain the connection between sine in triangles and sine in waves and phenomena like sound?
                                  • Can you give some tips for solving geometry problems?
                                  • Do waves actually look like the sine function?
                                  • Is it possible to make a super fast bicycle using gear ratios?
                                  • Is it possible to make a super SLOW bicycle using gear ratios?
                                  • Is it possible to multiply \(\pi\) with an integer and get a rational number?
                                  • \( \frac{17}{21} \) vs. \(\frac{43}{50}\)
                                  1 Reply Last reply Reply Quote 1
                                  • debbieD
                                    debbie ADMIN M0★ M1 M5
                                    last edited by

                                    Thu 5/21/20 Live stream topics

                                    • Area of an equilateral triangle
                                    • Fraction of area used up by cookie dough if cookie are cut out of a rolled-out sheet of dough
                                    • In how many ways can we arrange a six-digit number such that it is non-decreasing?
                                    • Are there more irrational numbers or rational numbers?
                                    • How do you prove Heron's Formula?
                                    • Are there more composite numbers or prime numbers?
                                    • How can we find the radius of three circles with a triangle making a point at each center, where the triangle sides are 16, 18 and 20?
                                    • \( (A-X)(B-X)(C-X) \times \ldots \times (Z-X)= ?\) (MATHCOUNTS Countdown Round)
                                    • What is your key piece of advice for succeeding in Calculus, or any complex mathematics study?
                                    • Do you have a floating keyboard?
                                    • What is the probability of getting a perfect score on the SAT by guessing every answer?
                                    • How long did it take for you to code the program for this live stream?
                                    • Pick any number. If that number is even, divide it by 2. If it's odd, multiply it by 3 and add 1. Now repeat this process with your new number. If you keep going, you'll eventually end up at 1. Why?
                                    • If you know how to draw an icosahedron, do you know how to draw an icosahenagon (with 21 sides)?
                                    1 Reply Last reply Reply Quote 1
                                    • debbieD
                                      debbie ADMIN M0★ M1 M5
                                      last edited by debbie

                                      Fri 5/22/20 Live stream topics

                                      Mustang Math Tournament

                                      • Why is \(\sqrt{2}\) so useful?
                                      1 Reply Last reply Reply Quote 1
                                      • debbieD
                                        debbie ADMIN M0★ M1 M5
                                        last edited by

                                        Sat 5/23/20 Live stream topics

                                        • How does COVID affect global warming?
                                        • How to make a very slow rocket
                                        • Do you have any number theory tips?
                                        • How tall are you in feet?
                                        • Is it possible that Star Wars or Star Trek could be real?
                                        • What stylus do you have?
                                        • Did you get a scholarship at Cambridge?
                                        • Can you please make a coding video or talk about some coding?
                                        • Why is number theory so hard?
                                        • Do you think stopping time is possible?
                                        • How long have you been a professor?
                                        • Where do you get working code?
                                        1 Reply Last reply Reply Quote 1
                                        • debbieD
                                          debbie ADMIN M0★ M1 M5
                                          last edited by

                                          Mon 5/25/20 Live stream topics

                                          • \( n^2 + 6n = x^2.\) Find all solutions for \(n\) if BOTH \(n\) and \(x\) are integers.
                                          • How to explain the fourth dimension
                                          • What's a good password that is unhackable?
                                          • What is 1% of 2% of 3% of 4% of 5% ... of 100% of 10000?
                                          • Create a row of 6 squares. Place \(X, Y,\) and \(Z\) in the first 3 squares respectively. You have to move them to the last 3 squares only by moving letters one space to the right. Find the total number of ways to do this. (2017 CEMC Waterloo Caley Contest Problem #24)
                                          • 3-D version of a Catalan number problem
                                          • Did you have a personal math teacher when you were younger, or did you study math on your own?
                                          • Are fingerprint passwords good?
                                          • How should I prepare for AOIME?
                                          • Do you have experience with machine learning calculus?
                                          • \( \frac{d}{dy} y^6 = 6y^5 \)
                                          1 Reply Last reply Reply Quote 1
                                          • debbieD
                                            debbie ADMIN M0★ M1 M5
                                            last edited by

                                            Tue 5/26/20 Live stream topics

                                            • Show that the next to last digit of \(3^n\) is always even.
                                            • The next to last digit of \(9^n\)
                                            • Binomial Coefficients and Pascal's Triangle
                                            • Have you looked at your Wikipedia page? Is the information there accurate?
                                            • Prove that powers of 5 have 2 as the second-to-last digit
                                            • How long would it take you to solve 6 IMO problems?
                                            • What is the smallest integer that you add to \( 2018 \times 2019 \times 2020\) to make it a cubic number?
                                            • If \( \frac{m+1}{m} = 9,\) then what is \(m^2 + \frac{1}{m^2}?\)
                                            • Prime factorize \(9991\) as the product of \(2\) primes
                                            • Have you ever met Eddie Woo?
                                            1 Reply Last reply Reply Quote 1

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